<template>
  <!-- 头部部分 -->
  <header class="header">
    <h1>todos</h1>
    <input @keydown.enter="add" v-model="msg" class="new-todo" placeholder="请输入任务名称" autofocus />
  </header>
</template>

<script>
export default {
  data() {
    return {
      msg:''
    }
  },
  methods: {
    add() {
      this.$emit('hadd',this.msg)
      this.msg = ''
    }
  },
};
</script>

<style>
</style>